Tehran, Iran (CNN) -- Iran is prepared to resume talks over its nuclear program but will wait until late August as punishment for recently imposed U.N. sanctions, President Mahmoud Ahmadinejad said Monday.

The outcome of the talks will depend on whether Western powers hold Israel to the same standards over its nuclear program, Ahmadinejad said at a news conference.

The U.N. Security Council imposed additional sanctions on Iran in early June, expanding an arms embargo and tightening restrictions on financial and shipping enterprises related to "proliferation-sensitive activities."

The 12-2 vote with one abstention came after the United States and other Security Council members expressed their concern over Iran's lack of compliance with previous U.N. resolutions on ensuring the peaceful nature of the nation's nuclear program.

The resolution on further sanctions was introduced by France, Germany, the United Kingdom and the United States. Brazil and Turkey voted against the measure and Lebanon abstained.

The United States pressured some nations to vote against Iran, Ahmadinejad said at Monday's news conference.

The Security Council also asked the U.N. secretary-general to create a panel of experts to monitor implementation of the sanctions.

Iran has disavowed any intentions of developing nuclear weapons and says its program is for peaceful purposes.